Healey to unveil AI package with £100m biosecurity lab in Budget■ Burnham hands EV targets decision to Haigh over wife’s industry links■ Ministers shelve plan for small companies to file profit and loss accounts■ Alex Depledge quits Treasury and tells Healey founders are no sideshow■ HMRC expects £12.9bn of tax debt to go uncollected, NAO says■ OpenAI cuts valuation by $150bn to $1.25tn after investor pushback■